diff --git a/package.json b/package.json
index 8829cc7b8..3503cd1ff 100644
--- a/package.json
+++ b/package.json
@@ -9,7 +9,8 @@
   "exports": {
     ".": {
       "require": "./lib/application.js",
-      "import": "./dist/koa.mjs"
+      "import": "./dist/koa.mjs",
+      "default": "./dist/koa.mjs"
     },
     "./*": "./*.js",
     "./*.js": "./*.js",